[  515.268082] bond0: (slave eth0): making interface the new active one
[  515.268179] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.515190] bond0: (slave eth0): Releasing backup interface
[  519.634144] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.807079] bond0: (slave eth0): Releasing backup interface
[  523.842089] bond0 (unregistering): Released all slaves